Series 25L

Series 25L

Series 25L

Product catalog summary
Overview: The document provides detailed specifications and features of Grayhill's Series 25L mechanical encoders, which are designed for various applications requiring precise rotational input.
Features:
  • Competitive pricing compared to similar designs.
  • High-quality construction and contact materials.
  • Multiple code and indexing choices available.
  • Durability with a life expectancy of 100,000 cycles.
  • Compact size, less than 1.0 inch square.
  • Manufactured to ISO 9001 standards.
Specifications:
  • Electrical Ratings: Switching loads of 1.5 mA at 115 Vac and 150 mA at 14 Vdc. Current carrying capacity is 250 mA maximum at 28 Vdc. Contact resistance is typically 75 mΩ, with insulation resistance of 1000 mΩ minimum and voltage breakdown of 1000 Vac minimum.
  • Mechanical Ratings: Rotational torque ranges from 2 to 6 in-oz. Operating temperature is from -40°C to +85°C, with storage temperature from -65°C to +85°C. Continuous rotation is standard, with custom stop locations available upon request.
  • Materials and Finishes: Bushing/housing and shaft/rotor are made of reinforced thermoplastic. Detent ball is stainless steel, nickel-plated, and detent spring is tinned music wire. Contacts are beryllium copper, gold-plated over nickel. Terminals are copper alloy, tin-plated over nickel.
Ordering Information: Available through local Grayhill distributors. Custom codes, termination, torque, and angles of throw can be requested. Custom materials, styles, colors, and markings are also available.
Code Options: The encoders offer hexadecimal, gray, and quadrature (2-bit) code outputs, with specific angles of throw and positions available for each type.
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Catalog excerpts

Series 25L-1

Mechanical Encoders SERIES 25L Hex, Gray and Quadrature Code FEATURES • Price Competitive to Similar Designs • Quality Construction and Contact Materials • Multiple Code and Indexing Choices • 100,000 Life Cycles • Less than 1.0" Square • Manufactured to ISO 9001 Standards dimensions in inches (and millimeters) Optical and Mechanical Encoders truth tables Clockwise Rotation Clockwise Rotation • Indicates closed circuit; blank indicates open circuit. • Indicates closed circuit; blank indicates open circuit. Code repeats every 4 positions. • Indicates closed circuit; blank indicates open circuit.Quadrature 2-bit Code Output Table for CW Rotation 2 3 4 5 6 POSITION NUMBER

 Open the catalog to page 1
Series 25L-2

Mechanical Encoders Specifications Electrical Ratings Switching Loads: 1.5 mA at 115 Vac, resistive; 150 mA at 14 Vdc, resistive Current Carrying Capacity: 250 mA maximum at 28 Vdc, resistive load Contact Resistance: 75 mΩ, typical Insulation Resistance: 1000 mΩ minimum between terminals Voltage Breakdown: 1000 Vac minimum between terminals Life Expectancy: 100,000 cycles of operation at rated loads. One cycle of operation is a rotation through all of the active positions and a return to the starting position. Mechanical Ratings Optical and Mechanical Encoders Rotational Torque: 2 to 6 in-oz...

 Open the catalog to page 2
*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.